Jef Akst | Mar 17, 2010 | 3 min read
Scientists have developed a powerful new way to study sperm competition: Watch the action -- live. The seminal receptacle (SR) and onespermatheca of a female D. melanogasterinitially mated to GFP-sperm malethen remated to RFP-sperm male.Image: © Science/AAASUsing fluorescent tagging technology, the researchers have bought themselves a front row seat to the fight, allowing them to decipher the strategies males use to ensure their sperm (and not another male's) reach the egg, already helping